Abstract: In order to address the jitter problem of the sliding mechanism of roadheader and anchor integrated machine during operation, this paper first models the sliding mechanism using CREO software. A mechanical simulation analysis of the guide column's performance is carried out based on ABAQUS, revealing the deformation response of the guide column as the sliding frame moves to different positions. The results show that a small deformation of the guide column is critical to the stable operation of roadheader and anchor integrated machine. To achieve a smaller deformation, the diameter of the guide column is optimized from the original 280 mm to a new design of 320 mm. Mechanical simulation studies on the two designs show that the deformation of the guide column is reduced by 11%～15% compared with the original design, successfully solving the jitter problem caused by insufficient stiffness. A new 3D model of the optimized guide column is created, and the original modular roadheader and anchor integrated machine (with a cutting device of 18 t and a guide column diameter of 280 mm) is added as a reference. The stress distribution of the boom under horizontal pressure in the sliding frame is compared among the three designs. The results show that the maximum contact stress on the newly designed guide column remains basically consistent with that of the original design, indicating that the optimized design effectively improves the overall working stability of roadheader and anchor integrated machine while maintaining the strength of the guide column.